Shield Sights RMSc Mounting Plate Features The Shield Sights Mounting Plate replaces the factory rear sight on a Glock 43 combining a slide-in rear sight with the mounting plate so the optic sits flush against the slide rather than requiring a milled cut. That design lets a Glock 43 owner add a red dot without sending the slide out for machining keeping the upgrade simple and reversible. The plate is purpose-built to sit flush with the RMSc and SMSc footprint maintaining a low snag-free profile that still allows a clear sight picture. Finished in black it matches the factory finish on most Glock 43 slides for a clean factory-look installation. Beyond the RMSc and SMSc this mount also fits the standard RMS SMS SMS2 and Jpoint sights though those slightly wider optics will have a small width overhang compared to the RMSc-specific fit. The RMSw will physically fit as well but its wider gasket may not seal fully flush against the narrower plate which is worth noting for anyone cross-shopping optics. Because the mount uses the existing rear sight dovetail and screw pattern installation stays straightforward for anyone comfortable with basic pistol maintenance. For Glock 43 owners who want a dot sight without a slide milling bill this mounting plate is a practical lower-cost path to get there. Shield Sights RMSc Mounting Plate Specifications Manufacturer: Shield Sights Model: Mounting Plate Type: Mount Color: Black Compatible Hosts: Glock 43 Optic Footprint: Shield RMSc Available At: GrabAGun